Device for adjusting spindles



(No Model.)

W A CHANDLER DEVICE FOR ADJUSTING SPINDLES.

Patented Deo. 12, 18973.

No. 510,404.v

UNITED STATES -PATENF OFFICE.

WALTER A. CHANDLER, OF LOVELL, ASSIGNOR TO GEORGE'DRAPER da SONS, FHOPEDALE, MASSACHUSETTS.

DEVICE FOR ADJUSTING SPINDLES.

SPECIFICATION forming part of Letters Patent No. 510,404, dated December12, 1893.

Application filed February 13, 1893. Serial No. 462,213. (No model.)

To all whom tpm/wy concern,.-

Beit known that I, WALTER A. CHANDLER, of the city of Lowell, in thecounty of Middlesex, in the State of Massachusetts, have invented acertain new and useful Improvement in Devices for Adjusting Spindles;and I declare the following to be a specification A thereof, referencebeing had to the accompanying drawings.

Like letters indicate like parts.

Figure 1 is a view of my invention, partly in side elevation and partlyin central, vertical section. Fig. 2 is a sectional view on line A A ofFig. 1. Fig. 3 is a sectional View on lineB B of Fig. 1. Fig. 4 is a topplan of the flanged bolster-support. Fig. 5 shows the nut by which thecasing is bound to the spindle rail. Fig. 6 is a side elevation of thebolster support. Fig. 7 is a perspective view of the adjustable step.Fig. 8 shows a modified form, in which the bolster and flanged portionare made in one piece, said figure being partly in central, longitudinalsection and partly in side elevation.

My invention relates to that class of spindles, which are verticallyadjustable with refence to their holsters upon a screw-threaded stepwithin the casing, upon the top of which step the foot of the spindlerests.

It consists of the combination, with a spindle, of an adjustable step,having a square head and a screw-threaded stem, the latter beingengageable with a central screw-threaded bore at the bottom of the oilchamber within the casing, a bolster-support, having a flange, abolster, having a central bore, and provided at its lower end with alocking portion, hexagonal in cross section, with plane faces to lie incontact with similarly disposed plane faces in the bore of the casing,and also having at its lower end a square opening, adapted to receivethe head of said adjustable step and to turn the step, as hereinafterparticularly specified. v

In the drawings, the spindle is shown at a.

. It is of any usual shape and size and hastafibrous sleeve e, which isto be saturated with oil. The bolster c has, near its lower end, alocking portion f, integral therewith, with plane exterior faces,angularly (preferably hexagonally) disposed, and said bolster terminateswith a cylindrical part f. The bore of the bolster c is made square incross section, at its lower end, as seen in Fig. 3. The casing g has theflange h and the enlarged head fi, in which are the oil ductsj. Saidcasing has theusual external screwthreads k, with which the nut vZ isengageable to fasten the casing'to the spindle-rail The casing has atubular bore to receive the bolsterc, and, concentric with said bore,but of a smaller diameter, is an oil chamber m, thus leaving an interiorshoulder fn. The

'bore of the casing g, just beneath the shoulder n, is made with planefaces, angularly disposed, to correspond to and be engageablev vwith theexterior, angularly disposed, plane faces of the locking portion f ofthe bolsterv the bottom of the bolster c. A bolstersupport q has aflange r and oil duct s. Said support is tubular and is tightly engagedwith the bolster and the tube extends up within the whirl-shell, as seenin Fig. 1. The flange r of the bolster-support rests upon the uppersurface of 'the head e' of the casing g. The bent screw-pin extends fromthe flange h, up over the whirl, for the usual purpose.

Having thus described the parts of my invention, I will now explain itsoperation and the advantages attending its use. By seizing the flangefr, the bolster c can be raised, until the lock-portion f thereof isdisengaged from the angular portion of the casing g. This movement,however, does not disengage said bolster from the head oof the step. asthe head (see Fig. 7) is sufficiently long and provided with planesides, whereby it is engageable with the square opening in the lowerportions f f ot' the bolster. When said locking portion f is disengaged,as above stated, the bolster can be turned, by means of the flange r ofthe bolster support q, there- IOO by turning to the same degree thescrewihreaded step to raise or lower `it as desired. As the foot of thespindle rests upon the top of the head o of the step, the spindle isvertically adjusted by said movement to the requisite height. Thebolster is then allowed to drop again into positionand the engagement ofits locking facesf in the new `position in the socket of the casing,secures it in place.

The bolster-support q may be made a part of the bolster and of the samepiece of metal, if necessary, as is shown in Fig. 8.

I claim as a novel and usefulinvention and desire to secure by LettersPatent-- l. The combination with the spindle, of the bolster, having atits lower end an angular central opening and exterior plane lockingfaces, the casing adapted to contain said bolster and `provided withacentral bore, a portion of which has plane locking faces, thescrew-threaded step mounted within said casing, adapted to support thespindle and haw ing its upperend angular and engageable with the lowerend of the bolster, and the bolstersupport attached to said bolster andresting upon the upper end of said casing, substantially as described.

2. The combination of the spindle a, the bolster c, having the planelocking faces f and an angular aperture at its bottom, the casing ghaving a central bore with corresponding plane locking faces therein,the adjustable screw-threaded step o p, mounted in said casing g andhaving its head operatively engageable with said aperture at the bottomof said bolster, and the bolster-support q attached to the bolster candhaving the angc r, all combined and operating substantially as and forthe purpose specified.

3. The combination of a spindle rail, spindle bearings, a spindle havingmeans for vertical adjustment as to said rail and means for changing thevertical adjustment accessible above said rail, while the spindle isrunning, substantially as described.

4. The 'combination of a spindle, a bolster casing, a step-bearinghaving an angular head and mounted by a screw-threaded connection withinthe bore of the bolster casing at the lower end thereof and verticallyadjustable therein by said screw-threaded connection, a bolster havingatapering interior and engageable by an angular opening at the bottomthereof with said step-bearing and means for eiecting the saidadjustment consisting of projections from said bolster adapted to beoperated to effect such adjustment While the spindle isrunning,-substantially asspecied.

WALTER A. CHANDLER.

Witnesses:

HARRY C. STARBIRD, CHAs. B. JOHNSON.

